FULL PRODUCT VERSION :
java version "1.6.0_10-rc"

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]
(this bug looks like OS independent)

EXTRA RELEVANT SYSTEM CONFIGURATION :
this bug happens for plugin2 only.

A DESCRIPTION OF THE PROBLEM :
as my collegue Gal asked in:
http://forums.java.net/jive/thread.jspa?threadID=47520&tstart=0

the problem is that we hook our JVMPI / JVMTI implementation by appending "-Xrunjvmhook -Xbootclasspath/a: ..." to _java_options (JVMPI) or by appending "-agentlib:jvmhook" to java_tool_options (JVMTI).

this is a backward compatibility issue, as the previous version did consider these environment variables.

as 'kbr' said in the link above, we are opening a bug for it.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
maybe one can try to connect any other JVMPI / JVMTI implementation.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
the environment variables should be considered.
ACTUAL -
the environment variables are not considered.

REPRODUCIBILITY :
This bug can be reproduced always.

Release Regression From : 6
The above release value was the last known release where this
bug was not reproducible. Since then there has been a regression.